The '''Catholic Church''', also known as the '''Roman Catholic Church''', is the largest Christianity|Christian
church, with more than 1.250 billion members worldwide.
One of the oldest religious institutions in the world, it has played a prominent role in the history of Western civilisation
[Gerald O'Collins|O'Collins, p. v (preface).] Papal supremacy|Headed
by the Diocese of Rome|Bishop of Rome
, known as the Pope
, its doctrines are summarised in the Nicene Creed
The Catholic Church is also distinguished by its celebration of the Sacraments of the Catholic Church|seven sacraments
The Catholic Church...